Hot air heater



Oct zo 1931- c. l.. CUTLER, JR 1,828,319

HOT AIR HEATER Fiied Feb. 27, 1930 2 sheets-sheet 1 Inventar: CharlesL.Caller, Jr, by mb Q.

2 Sheets-Sheet 2 HOT AIR HEATER C. L. CUTLER, JR

Filed Feb. 27, 1930 Oct. 20,v 1931.

l'zwcnfor: Charlesl. Cullen Jn,

Y by

Patented Oct. 20, 1931 NTED STATESl CHARLES L. CUTLER, JR., OF MARLBORO,MASSACHUSETTS HOT AIR HEATER Application led February 27, 1930. SerialNo. 431,744.

This invention relates to hot air heaters and particularly to devices ofthis character which may be installed in a cabinet formed of insulatingmaterial and has for its object the production of a heater in which theair admitted thereto may be heated to high degree of temperature with aminimum expenditure of oil in the oil burner utilized therewith. v

This object is attained by the mechanism illustrated in the accompanyingdrawings.

For the purpose of illustrating t-he invention, one preferred formthereof is illustrated in the drawings, this form having been found togive satisfactory and reliable results, although it is to be understoodthat the various instrumentalities of which the invention consists canbe variously arranged and organized, and the invention is not limit- 2Ued to the precise arrangement and organization of theseinstrumentalities as herein shown/and described except as required bythe scope of the appended claims. Of the drawings: D Figure 1 representsa vertical section of a hot air heater embodying theprinciples of thepresent invention, the cutting plane being on line 1, 1, on Fig. 2. f

Figure 2 represents a horizontal section of same on line 2, 2, on Fig.1.

Figure 3 represents a horizontal section of same on line 3, 3, on Fig.1.

Figure 4-represents a vertical transverse section on line 4, 4, on Fig.1, and Figure 5 represents a sectional detail showing how the hot airpipes are mounted in the partitions and the unions are connectedthereto.

Similar characters indicate like parts throughout the several figures ofthe drawino's.

' 2Tn thedrawings, 10 is a cabinet, the side and top walls of whichareformed of insulating material adapted to prevent the escape of heattherefrom.

TWithin the cabinet and parallel Vwithv the end walls thereof are metalpartitions 11 extending from the bottom of the cabinet to the top wallthereof.

These partitions 11 are spaced from the end walls of the cabinet andform' compartments 12 entirely closed.

These compartments are filled with dead air which has no circulation.

Between the partitions 11 are a plurality of pipes 18, the ends of whichextend through the partitions 11 and are connected in series by unions14 within the compartments 12.

By means of these unions a continuous conduit is formed, the lower endof which communicates with a pipe 13 through which cold air is admittedto said conduit.

The upper end of the conduit has an elbow 16 connected thereto within acompartment 12 and from this elbow extends a pipe 17 through which theheated air passes upwardly to the registers in the various rooms of thehouse or apartment in which the cabinet is installed.

In the lower end of the cabinet 10 and beneath the pipes 13 are'oilburners 18, one or both of which may be used to heat the air passingthrough the conduit 13, 14.

Access to the burners is obtained through the door 19 in the front wallof the cabinet 7 10 and on either side of the door 19 are open- 1ngs20for the admission of air to the burn- GTS.

wall of the cabinet thereby forming a pas- 9 sage 23 communicating nearits lower end with an exit pipe 24 leading to the chimney Hue.

This exit pipe 24 has a branch pipe 25 ex'- tending therefrom andcommunicating with the passage 23 near the top of the partition 22.

This branch pipe 25 is provided with a valve or damper 26 which may beclosed when the heater is in operation and it is desired to have theproducts of combustion enter the pipe 24 at its lowest end.

The bafiie plate 21 is curved in such a manner that the products ofcombustion from the oil burner 18 will be deflected upwardly intocontact with the various pipes 13 to be discharged at 27 into the upperend of the passage 23.

Each partition 11 is provided with an annular flange 28 surrounding theend of each pipe 13, and each pipe is provided near each end thereofwith a stud 29 adapted to contact with the inner faces of the partitions11 to prevent any end movement of said pipes relatively to saidpartitions 11.

All of the products of combustion from the oil burners 18 are confinedwithin the chamber`frmed by the front wall ot the cabinet, the endpartitions 11, and the back partition 22,180 that all of the pipes 13disposed between the partitions 11 are subjected to these products ofcombustion.

AS a consequence the cold air first admitted to the lower pipes will beheated to some extent and as this air partially heated moves upwardlythrough the conduit 13, 14, it will be subjected to more and more heatuntil it passes from the upper pipe 13 into the vertical pipe 17.

" At this time it will be intensely heated.

The products of combustion from the burner 18 will also heat the endpartitions 11 and back partition 22, and this heat will radiate fromthese partitions into Contact with the pipes 13, thereby greatlyassisting in the heating of the air passing through said pipes.

' By means of the construction herein shown which may be constructed atlittle cost, a great quantity of hot air may be provided Sufficient toheat Several rooms with a minimum expenditure of oil in the oil burners.

Itisbelieved that the operation and many advantages 0f the inventionwill be understood without further description.

Having thus described my invention, I claim:

1. The combination of a cabinet having top, side and end walls ofinsulating material; partitions therein parallel with and s aced fromthe end walls of said cabinet; a urality of substantially horizontalpipes extending through both said partitions; unions connecting theprojecting ends of said pipes to form a continuous conduit extending uwardly within said cabinet; means for admitting cold air to the lowerend of said conduit; an outlet from said conduit extending from theupper end of said cabinet, and a heat producing device directly beneathsaid conduit.

2. The combination of a cabinet having top, side and end walls ofinsulating material, metal partitions therein parallel with and spacedfrom the end walls thereof; a

'd5 plurality of pipes extending through said partitions; unionsconnecting the projecting ends of said pipes to form a continuousconduit extending upwardly within said cabinet; means for admitting coldair to the lower end of said conduit; an outlet from said conduitextending from the upper end of said cabinet, and an oil burner beneathsaid conduit.

3. The combination of a cabinet having top, sideI and end walls ofinsulating material; metal partitions therein parallel with and spacedfrom the end. walls of said cabinet; a plurality of pipes extendingthrough both said partitions; unions connecting the projecting ends ofsaid pipes to forni a continuous conduit extending upwardly within saidcabinet; means for admitting cold air to the lower end of said conduit;a baille plate beneath the lower pipe; an outlet from said conduitextending from the upper end of said cabinet and an oil burner beneathsaid baille plate.

4. The combination of a cabinet having top, side and end walls ofinsulating material; metal partitions therein parallel with and spacedfrom the end walls of said cabinet; a plurality of pipes extendingthrough both said partitions; unions connecting the projecting ends ofsaid pipes to form a continuous conduit extending upwardly within saidcabinet; means for admitting cold air to the lower end of said conduit;a metal partition between said end partitions and spaced from the backwall of said cabinet, said partition extending from the bottom of thecab inet to a point adjacent the top wall thereof; an outlet from saidconduit extending from the upper end of said cabinet and a heatproducing device directly beneath said conduit.

5. The combination of a cabinet having top, side and end walls ofinsulating material; metal partitions therein parallel with and spacedfrom the end walls of said cabinet; a plurality of pipes extendingthrough both said partitions; unions connecting the projecting ends ofsaid pipes to form a continuous conduit extending upwardly within saidcabinet; means for admitting cold air to the lower end of said conduit;a metal partition between said end partitions and spaced from the backwall of said cabinet, said partition extending from the bottom of thecabinet to a point adjacent the top wall thereof; an oil burner; meansfor deflecting the products of combustion from said burner to the exitabove said back partition; and an outlet from said conduit extendingfrom the upper end of said cabinet.

6. The combination of a cabinet having top, said and end Walls ofinsulating material; metal partitions therein parallel with and spacedfrom the end walls of said cabinet; a plurality of pipes extendingthrough both said partitions; unions connecting the projecting ends ofsaid pipes to form acontinuous conduit extending upwardly within saidcabinet; means for admitting cold air to the lower end of said conduit;a metal partition between said end partitions and spaced from the backwall of said cabinet, said partition extending from the bottom of thecabinet to a point adjacent the top wall thereof; a pipe extending fromthe lower end of the back wall of said cabinet for the exit of theproducts of combustion; an outlet from said conduit extending from theupper end of said cabinet, and a heat producing device directly beneathsaid conduit.

7. The combination of a cabinet having top, side and end walls ofinsulating material; metal partitions therein parallel with and spacedfrom the end walls of said cabinet; a plurality of pipes extendingthrough both said partitions; unions connecting the projecting ends ofsaid pipes to form a continuous conduit extending upwardly within saidcabinet; means for admitting cold air to the lower end of said conduit;a metal partition between said end partitions and spaced from the backwall of said cabinet, said partition extending from the bottom of lthecabinet to a point adjacent the top wall thereof; a pipe extending fromthe lower end of the back wall of said cabinet for the exit of theproducts of combustion; a branch valved pipe from said exit pipeextending through the back wall of the cabinet near the top of said backpartition; an outlet from said conduit extending from the upper end ofsaid cab inet, and a heat producing device directly beneath saidconduit.

8. The combination of a cabinet having top, side and end walls ofinsulating material; metal partitions therein parallel with and spacedfrom the end walls of said cabinet; a plurality of pipes extendingthrough both said partitions; unions connecting the projecting ends ofsaid pipes to form a continuous conduit extending upwardly within saidcabinet; means for admitting cold air to the lower end of said conduit;means for preventing end movement of said pipes relative to said endpartitions; an outlet from said conduit extending from the upper end ofsaid cabinet, and a heat producing device directly beneath said conduit.

9. The combination of a cabinet having top, side and end walls ofinsulating material; metal partitions therein parallel with and spacedfrom the end walls of said cabinet; a plurality of pipes extendingthrough both said partitions; unions connecting the projecting ends ofsaid pipes to form a continuous conduit extending upwardly within saidcabinet; means for admitting cold air to the lower end of said conduit;flanges formed on said end partitions and surrounding the outer ends ofsaid pipes; an outlet from said conduit extending from the upper end ofsaid cabinet, and a heat producing device directly beneath said conduit.

10. The combination of a cabinet formed of insulating material; an oilburner in thel

